original description(ofPolymastia robusta Bowerbank, 1862) Bowerbank, J.S. (1862). On the Anatomy and Physiology of the Spongiadae. Part II. Philosophical Transactions of the Royal Society. 152(2): 747-829, pls XXVII-XXXV.page(s): 822; pl XXVII fig 1 & 2; note: name given only in legend of figures [details]

original description(ofEuplectella robusta Bowerbank, 1861) Bowerbank, J.S. (1861 [1860]). List of British sponges. Pp. 235-236 In: McAndrew, R. (Ed.), List of the British marine invertebratefauna. Report of the British Association for the Advancement of Science, 30.[details]

additional source(ofPolymastia robusta Bowerbank, 1862) Brunel, P.; Bosse, L.; Lamarche, G. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. Canadian Special Publication of Fisheries and Aquatic Sciences, 126. 405 p. (look up in RoR) [details]Available for editors

additional source(ofPolymastia robusta Bowerbank, 1862) Bowerbank, J.S. (1862). On the Anatomy and Physiology of the Spongiadae. Part III On the Generic Characters, the Specific Characters, and on the Method of Examination. Philosophical Transactions of the Royal Society. 152(2): 1087-1135, pls LXXII-LXXIV.page(s): 1134; pl LXXIII fig 2; note: name given only on figure [details]